Avotaynu
The new Anthology of Jewish Genealogy here compiles more than 2,900 articles from the journal Avotaynu (1985-2011); access costs $35. Still free here is the Consolidated Jewish Surname Index, a gateway to information about 699,084 surnames in 42 different databases totaling more than 7.3 million records.

Danish Demographic Database
Hans Christian Andersen himself couldn’t have dreamed up a better resource for researching Danish pedigrees. Start with emigration records on nearly 400,000 Danes who departed from Copenhagen or via Hamburg (1869 to 1908), then find them at home in censuses from 1787 on. Thumbelina and the Little Mermaid might not be here, but your Danish kin likely are.

Digitalarkivet
Another stellar—and free—Scandinavian website, this collection of databases from the National Archives of Norway continues to add digitized church records, the most important tool for Norwegian research. Also new here are additional censuses, which now include the 1664-1666, 1701, 1801, 1865, 1875, 1885, 1891, 1900 and 1910 enumerations (some still being completed online).

JewishGen
An addition of 1 million new records brings this site, affiliated with the Museum of Jewish Heritage, to 21 million total. Databases cover surnames, Jewish communities (shtetls), burials and more.

When you buy the Historical Maps of Europe Premium Collection, you'll get the brand new Family Tree Historical Maps Book: Europe, as well as an assortment of other incredible tools to trace you ancestors back to the home country and visualize the world in which they lived--in full color.

Only available in March, this collection has a retail value of $197.95, but is yours this month only for $59.99!